A private nutrition, training and energy-balance tracker for one household.
This is not a product. It is a personal system used by two people in a single household to keep track of what they eat, how they train, and what their bodyweight is doing over time. There is nothing to sign up for and no version of it available to anyone else.
The system reads five things and only these five: steps, active energy burned, body weight, body fat percentage, and exercise sessions. Access is read-only. Nothing is ever written back to Google Health, and the data is not shared with anyone or used for anything beyond the household's own reporting.
The privacy policy sets out exactly what is collected, where it is stored, and how to revoke access.